Antifrictional device for relatively movable parts.



Patented Apr.28, 1914.

P. E. BOGORSELSKI.

AIIFIJIOA'I'ION FILED MAR. 22, 1913.

ANTiFRIGTIONAL DEVICE FOR RELATIVELY MOVABLE PARTS.

INVENTOR,

Flank ECBovoweZs/cz,

' ATTORNEY.

Specification of Letters Patent.

Application filed March 22, 19l3. Serial No. 758.080. v

FRANK E. noconsnLsxr, or RICHMOND, VIRGINIA.

AN'rrrn'I'crI-oNAL nnvIcn ron nnLAmvnnY MOVABLE'PARTS.

Patented Apr. 28, 1914.

' To all when! itmu concern:

lie it known that I, FRANK E. Booonsuislu." a .citizen of the Unlted States oi America. and; resident of Richmond, 1n the I county of l'lenlico and State of Virginia, have invented certain new and usetul Improvemenls in rhitifrictional Devices for Relatively Movable Parts, of which the following is a full. clear, and exact description.

This invention relates to the provision, in a novel manner, in and .between relatively movable parts, of rolling members for antia such rolling members leaving them free for the easiestand most frictionlessrolling actions, the one relatively to theother and to the walls of the channel in which they are accommodated as well as in their relations to the surface of the part which is adjacent and movable relatively'to' the part which is equipped with the anti-friction device.

Another object is to combine an antifriction device comprising rolling members in a channel in one of two' associated and conjointly rotative parts which parts, however, may slide one along the other, and the second one of which has a longitudinal groove therein within which portions of the bulk of the rolling members engage whereby in addition to the easy sliding movement of the first part relatively to the second, or vice versa, the rolling members serve as a spline to prevent independent rotative movement of the one in relation to the otherl And another object is to provide such a construction and combination of the parts as conduces to simplicity, cheapness of manu-.

facture, and easy assemblage and disassemblage for replacement or repair.

v The invention is described "11 con unction w1th the accompanying drawings and is set forth in the claims.

In the drawings -Figure 1 is "a sectional elevat on showmg as an example av situation in which my improved anti-friction device is available.

through such gear.

rahty of grooves a longitudinally and in parallelism along the periphery thereof and 2 channels b and d comprised in t e loop- Fig. 2 is a sectional" elevation of i a longitudinally grooved shaft and anan-f nular member encircling same and equipped b meshing with which is a bevel pinion I) on the power driven shaft E. In this class of machines the shaft A is spline engaged through the elongated hub of the bevel gear wheel C so that while partaking of them-- .tary movement of the gear the shaft may have a rlsin" and fallin slidin movement P) b P The shaft has a pluin the'present instance arranged at thirds.

Thegear or other annular member has directly therem, or within an annular bushing member fitted and secured in the gear, a plurality of race ways for rolling members, in number corresponding to that of the shaft grooves. Each race way comprises a pair of substantially parallel channels, one of which channels 7) opeus'to'ths inner wall of the annular member, the other, d, being'transverscly/ofi'set from the one b,-these channels having ways 7 in continuation of and uniting therein one with another, thus forming a loop-shaped race way in which the rolling members g, here re resented as balls, may have-a continuous y progressive and round about movement in either direction. The halls are of such size relatively to the depth of the channel I) as to have consider:

able portions of their bulkprotruding beyond the mouthjof the channel and to enter in engagement in the adjacent'longitudinal groove of the shaft.

In practice, whn'the collarflike member Fis jm'ade. its-represented in Fi the aha ed race way are formed in ,the ends of suci part F and thefremovable cap plates '105 having curved inner surfaces form closures for the channel-end'uniting waysj. Thesej cap prlatesare held in place byscrews 1a, and

ey. are made witharc shaped ton es protrude inwardly into the s aft grooves and prevent dirt or dust or any extraneous matter from entering by way of the grooves to within the ball races.

It is to be appreciated that in drilling machines of the type here illustrated the sliding movement of'the shaft relatively to the collar member through which it has a spline engagement moves in a hard manner when necessarily overcoming the bind occasioned by the turning force of the gear wheel, and which latter through the spline all in relation to the other. And although 'I ave shown and particularly described the anti-friction device as combined in a drilling machine, the invention is, as manifest, advantageously available in the sliding collar whichv encircles the shaft of a clutch.

The example of the employment of the anti-friction devices last given indicates thatthe same is not necessarily confined to employment in conjointly rotating parts one of which. is movable axially relatively to the other; and although several indications of situations in which the device may be beneficially employed have been herein made as. v a 1,094,072

and a particular'structural formation of the device has been shown and described,

uses in other situations and various changes in respect to'minor details of construction may be made within the scope of the invention and the purview of the claims Withou departure from the invention.

I claim i The combination of a shaft having longitudinal grooves and supported for rotary movement, of a collar embracin the shaft and provided with transverse ba l-raceways longitudinally alined with the longitudinal shaft grooves, and also provided with ballraceways in parallelism with the first ballraceways and communicating therewith to provide a continuous ball circulation transverse to the collar, balls movable in the raceways and in the shaft grooves and adaptedto spline the collar to the shaft to prevent relative rotary movement, and plates having noses projecting into the shaft grooves for holding the balls in place, the balls disposed in the innermost raceways being adapted to snugly fit in the shaft grooves and the collar being adapted to be actuated to rotate the shaft and the shaft being adapted to be actuated to rotate the collar.

Signed by me at Springfield, Mass, 1n presence of two subscribing witnesses.

FRANK E. BocoRsEL'sKI.

Witnesses;

WM. S. BELLOWS, G. R. DRISCOLL. 

